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   <div id="projectname">Reranker Framework (ReFr)
   
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   <div id="projectbrief">Reranking framework for structure prediction and discriminative language modeling</div>
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<div class="title">environment.H</div>  </div>
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<a href="environment_8_h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright 2012, Google Inc.</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">//</span>
<a name="l00004"></a>00004 <span class="comment">// Redistribution and use in source and binary forms, with or without</span>
<a name="l00005"></a>00005 <span class="comment">// modification, are permitted provided that the following conditions are</span>
<a name="l00006"></a>00006 <span class="comment">// met:</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">//   * Redistributions of source code must retain the above copyright</span>
<a name="l00009"></a>00009 <span class="comment">//     notice, this list of conditions and the following disclaimer.</span>
<a name="l00010"></a>00010 <span class="comment">//   * Redistributions in binary form must reproduce the above</span>
<a name="l00011"></a>00011 <span class="comment">//     copyright notice, this list of conditions and the following disclaimer</span>
<a name="l00012"></a>00012 <span class="comment">//     in the documentation and/or other materials provided with the</span>
<a name="l00013"></a>00013 <span class="comment">//     distribution.</span>
<a name="l00014"></a>00014 <span class="comment">//   * Neither the name of Google Inc. nor the names of its</span>
<a name="l00015"></a>00015 <span class="comment">//     contributors may be used to endorse or promote products derived from</span>
<a name="l00016"></a>00016 <span class="comment">//     this software without specific prior written permission.</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018 <span class="comment">// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span>
<a name="l00019"></a>00019 <span class="comment">// &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span>
<a name="l00020"></a>00020 <span class="comment">// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span>
<a name="l00021"></a>00021 <span class="comment">// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span>
<a name="l00022"></a>00022 <span class="comment">// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<a name="l00023"></a>00023 <span class="comment">// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span>
<a name="l00024"></a>00024 <span class="comment">// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span>
<a name="l00025"></a>00025 <span class="comment">// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span>
<a name="l00026"></a>00026 <span class="comment">// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span>
<a name="l00027"></a>00027 <span class="comment">// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span>
<a name="l00028"></a>00028 <span class="comment">// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00029"></a>00029 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00030"></a>00030 <span class="comment">//</span>
<a name="l00031"></a>00031 <span class="comment">//</span>
<a name="l00038"></a>00038 <span class="comment"></span>
<a name="l00039"></a>00039 <span class="preprocessor">#ifndef RERANKER_ENVIRONMENT_H_</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#define RERANKER_ENVIRONMENT_H_</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span>
<a name="l00042"></a><a class="code" href="environment_8_h.html#abeee3249a73d20ce434d64f7ce0767cb">00042</a> <span class="preprocessor">#define VAR_MAP_DEBUG 0</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span>
<a name="l00044"></a>00044 <span class="preprocessor">#include &lt;sstream&gt;</span>
<a name="l00045"></a>00045 <span class="preprocessor">#include &lt;vector&gt;</span>
<a name="l00046"></a>00046 
<a name="l00047"></a>00047 <span class="preprocessor">#include &quot;<a class="code" href="stream-init_8_h.html" title="Provides a generic dynamic object factory.">stream-init.H</a>&quot;</span>
<a name="l00048"></a>00048 <span class="preprocessor">#include &quot;<a class="code" href="stream-tokenizer_8_h.html" title="Provides the StreamTokenizer  class.">stream-tokenizer.H</a>&quot;</span>
<a name="l00049"></a>00049 
<a name="l00050"></a>00050 <span class="keyword">namespace </span>reranker {
<a name="l00051"></a>00051 
<a name="l00052"></a>00052 <span class="keyword">using</span> std::cerr;
<a name="l00053"></a>00053 <span class="keyword">using</span> std::endl;
<a name="l00054"></a>00054 <span class="keyword">using</span> std::ostream;
<a name="l00055"></a>00055 <span class="keyword">using</span> std::ostringstream;
<a name="l00056"></a>00056 <span class="keyword">using</span> std::tr1::shared_ptr;
<a name="l00057"></a>00057 <span class="keyword">using</span> std::tr1::unordered_map;
<a name="l00058"></a>00058 <span class="keyword">using</span> std::tr1::unordered_set;
<a name="l00059"></a>00059 <span class="keyword">using</span> std::vector;
<a name="l00060"></a>00060 
<a name="l00061"></a>00061 <span class="keyword">class </span>Environment;
<a name="l00062"></a>00062 
<a name="l00065"></a><a class="code" href="classreranker_1_1_var_map_base.html">00065</a> <span class="keyword">class </span><a class="code" href="classreranker_1_1_var_map_base.html" title="A base class for a mapping from variables of a specific type to their values.">VarMapBase</a> {
<a name="l00066"></a>00066  <span class="keyword">public</span>:
<a name="l00075"></a><a class="code" href="classreranker_1_1_var_map_base.html#a9b2d8d49539deaff0862a1cac387aad7">00075</a>   <a class="code" href="classreranker_1_1_var_map_base.html#a9b2d8d49539deaff0862a1cac387aad7" title="Constructs a base class for a concrete implementation providing a mapping from variables of a particu...">VarMapBase</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, <a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> *env, <span class="keywordtype">bool</span> is_primitive) :
<a name="l00076"></a>00076       <a class="code" href="classreranker_1_1_var_map_base.html#aa262c6f13b3e83d428d3afcb1a5864ca" title="The type name of this VarMap.">name_</a>(name), <a class="code" href="classreranker_1_1_var_map_base.html#aa24cb62b1c8aa7cf4049772f35712944" title="The Environment that holds this VarMap instance.">env_</a>(env), <a class="code" href="classreranker_1_1_var_map_base.html#a6b1e6b981ae86d5acfb9889dbc69c89d" title="Whether this VarMap instance holds variables of primitive type or vector of primitives.">is_primitive_</a>(is_primitive) { }
<a name="l00077"></a>00077 
<a name="l00078"></a><a class="code" href="classreranker_1_1_var_map_base.html#a0d49848ea240d99d8e99b38af0130564">00078</a>   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_var_map_base.html#a0d49848ea240d99d8e99b38af0130564">~VarMapBase</a>() { }
<a name="l00079"></a>00079 
<a name="l00082"></a><a class="code" href="classreranker_1_1_var_map_base.html#ac37ba67371f01d047550c6fc55177d37">00082</a>   <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classreranker_1_1_var_map_base.html#ac37ba67371f01d047550c6fc55177d37" title="Returns whether this instance contains primitive or primtive vector variables.">IsPrimitive</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classreranker_1_1_var_map_base.html#a6b1e6b981ae86d5acfb9889dbc69c89d" title="Whether this VarMap instance holds variables of primitive type or vector of primitives.">is_primitive_</a>; }
<a name="l00084"></a><a class="code" href="classreranker_1_1_var_map_base.html#acf4c7614b477b3f986c0c1e7d9551ae0">00084</a>   <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">string</span> &amp;<a class="code" href="classreranker_1_1_var_map_base.html#acf4c7614b477b3f986c0c1e7d9551ae0" title="Returns the type name of the variables of this instance.">Name</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classreranker_1_1_var_map_base.html#aa262c6f13b3e83d428d3afcb1a5864ca" title="The type name of this VarMap.">name_</a>; }
<a name="l00085"></a>00085 
<a name="l00088"></a>00088   <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classreranker_1_1_var_map_base.html#af9d31b9fe4a4a5b6b30ea968fd59ddf5" title="Returns whether the specified variable has a definition in this environment.">Defined</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname) <span class="keyword">const</span> = 0;
<a name="l00089"></a>00089 
<a name="l00094"></a>00094   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_var_map_base.html#a2870abd4bc8ad1d925fc304acb44417d" title="Reads the next value (primitive or spec for constructing a Factory-constructible object) from the spe...">ReadAndSet</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname, <a class="code" href="classreranker_1_1_stream_tokenizer.html" title="A simple class for tokenizing a stream of tokens for the formally specified language used to construc...">StreamTokenizer</a> &amp;st) = 0;
<a name="l00095"></a>00095 
<a name="l00099"></a>00099   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_var_map_base.html#a9e4f03b385dd93614a7a870241b6dcac" title="Prints out a human-readable string to the specified output stream containing the variables, their type and, if primitive, their values.">Print</a>(ostream &amp;os) <span class="keyword">const</span> = 0;
<a name="l00100"></a>00100 
<a name="l00102"></a>00102   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_var_map_base.html" title="A base class for a mapping from variables of a specific type to their values.">VarMapBase</a> *<a class="code" href="classreranker_1_1_var_map_base.html#ad8a03d5cb3c186131e9af106d59bf751" title="Returns a newly constructed copy of this VarMap.">Copy</a>(<a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> *env) <span class="keyword">const</span> = 0;
<a name="l00103"></a>00103 
<a name="l00104"></a>00104  <span class="keyword">protected</span>:
<a name="l00107"></a><a class="code" href="classreranker_1_1_var_map_base.html#a4378638e3959e3b98135a90cbee819ea">00107</a>   <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_var_map_base.html#a4378638e3959e3b98135a90cbee819ea" title="To allow proper implementation of Copy in VarMapBase implementation, since we don&#39;t get copying of ba...">SetMembers</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, <a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> *env, <span class="keywordtype">bool</span> is_primitive) {
<a name="l00108"></a>00108     <a class="code" href="classreranker_1_1_var_map_base.html#aa262c6f13b3e83d428d3afcb1a5864ca" title="The type name of this VarMap.">name_</a> = name;
<a name="l00109"></a>00109     <a class="code" href="classreranker_1_1_var_map_base.html#aa24cb62b1c8aa7cf4049772f35712944" title="The Environment that holds this VarMap instance.">env_</a> = env;
<a name="l00110"></a>00110     <a class="code" href="classreranker_1_1_var_map_base.html#a6b1e6b981ae86d5acfb9889dbc69c89d" title="Whether this VarMap instance holds variables of primitive type or vector of primitives.">is_primitive_</a> = is_primitive;
<a name="l00111"></a>00111   }
<a name="l00112"></a>00112 
<a name="l00114"></a><a class="code" href="classreranker_1_1_var_map_base.html#aa262c6f13b3e83d428d3afcb1a5864ca">00114</a>   <span class="keywordtype">string</span> <a class="code" href="classreranker_1_1_var_map_base.html#aa262c6f13b3e83d428d3afcb1a5864ca" title="The type name of this VarMap.">name_</a>;
<a name="l00116"></a><a class="code" href="classreranker_1_1_var_map_base.html#aa24cb62b1c8aa7cf4049772f35712944">00116</a>   <a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> *<a class="code" href="classreranker_1_1_var_map_base.html#aa24cb62b1c8aa7cf4049772f35712944" title="The Environment that holds this VarMap instance.">env_</a>;
<a name="l00119"></a><a class="code" href="classreranker_1_1_var_map_base.html#a6b1e6b981ae86d5acfb9889dbc69c89d">00119</a>   <span class="keywordtype">bool</span> <a class="code" href="classreranker_1_1_var_map_base.html#a6b1e6b981ae86d5acfb9889dbc69c89d" title="Whether this VarMap instance holds variables of primitive type or vector of primitives.">is_primitive_</a>;
<a name="l00120"></a>00120 };
<a name="l00121"></a>00121 
<a name="l00124"></a><a class="code" href="classreranker_1_1_environment.html">00124</a> <span class="keyword">class </span><a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> {
<a name="l00125"></a>00125  <span class="keyword">public</span>:
<a name="l00126"></a><a class="code" href="classreranker_1_1_environment.html#a987c93a94bcb94e3e5facdcf51109fc6">00126</a>   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_environment.html#a987c93a94bcb94e3e5facdcf51109fc6">~Environment</a>() { }
<a name="l00127"></a>00127 
<a name="l00130"></a>00130   <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classreranker_1_1_environment.html#aed7a464b7498b2855eb24ee4563c8276" title="Returns whether the specified variable has been defined in this environment.">Defined</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname) <span class="keyword">const</span> = 0;
<a name="l00131"></a>00131 
<a name="l00134"></a>00134   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_environment.html#ae2641671e6f45d47f9432429ad5349bf" title="Sets the specified variable to the value obtained from the following tokens available from the specif...">ReadAndSet</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname, <a class="code" href="classreranker_1_1_stream_tokenizer.html" title="A simple class for tokenizing a stream of tokens for the formally specified language used to construc...">StreamTokenizer</a> &amp;st) = 0;
<a name="l00135"></a>00135 
<a name="l00137"></a>00137   <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">string</span> &amp;<a class="code" href="classreranker_1_1_environment.html#a971839d4e0e9f5a2d7e76214c81592f3" title="Retrieves the type name of the specified variable.">GetType</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname) <span class="keyword">const</span> = 0;
<a name="l00138"></a>00138 
<a name="l00140"></a>00140   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_var_map_base.html" title="A base class for a mapping from variables of a specific type to their values.">VarMapBase</a> *<a class="code" href="classreranker_1_1_environment.html#a64763b2d3e5a5f1cc7a69ecc018d6003" title="Retrieves the VarMap instance for the specified variable.">GetVarMap</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname) = 0;
<a name="l00141"></a>00141 
<a name="l00143"></a>00143   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_var_map_base.html" title="A base class for a mapping from variables of a specific type to their values.">VarMapBase</a> *<a class="code" href="classreranker_1_1_environment.html#a3602611145e0b9c82aee80dd8e1abbf2" title="Retrieves the VarMap instance for the specified type.">GetVarMapForType</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;type) = 0;
<a name="l00144"></a>00144 
<a name="l00147"></a>00147   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_environment.html#a07d328d2d2bbe0f62e7348f590e6529c" title="Prints a human-readable string of all the variables in this environment, their types and...">Print</a>(ostream &amp;os) <span class="keyword">const</span> = 0;
<a name="l00148"></a>00148 
<a name="l00150"></a>00150   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> *<a class="code" href="classreranker_1_1_environment.html#ad5ad2fe5a00eba18331de208dd4f4b02" title="Returns a copy of this environment.">Copy</a>() <span class="keyword">const</span> = 0;
<a name="l00151"></a>00151 
<a name="l00153"></a>00153   <span class="keyword">static</span> <a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> *<a class="code" href="classreranker_1_1_environment.html#a1214411c110887639ada037668265792" title="A static factory method to create a new, empty Environment instance.">CreateEmpty</a>();
<a name="l00154"></a>00154 };
<a name="l00155"></a>00155 
<a name="l00160"></a>00160 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
<a name="l00161"></a><a class="code" href="classreranker_1_1_value_string.html">00161</a> <span class="keyword">class </span><a class="code" href="classreranker_1_1_value_string.html" title="A template class that helps print out values with ostream&amp; operator support and vectors of those valu...">ValueString</a> {
<a name="l00162"></a>00162  <span class="keyword">public</span>:
<a name="l00163"></a><a class="code" href="classreranker_1_1_value_string.html#a83762558d5d4862c2353792f0e1528b6">00163</a>   <span class="keywordtype">string</span> <a class="code" href="classreranker_1_1_value_string.html#a83762558d5d4862c2353792f0e1528b6">ToString</a>(<span class="keyword">const</span> T &amp;value)<span class="keyword"> const </span>{
<a name="l00164"></a>00164     ostringstream oss;
<a name="l00165"></a>00165     oss &lt;&lt; value;
<a name="l00166"></a>00166     <span class="keywordflow">return</span> oss.str();
<a name="l00167"></a>00167   }
<a name="l00168"></a>00168 };
<a name="l00169"></a>00169 
<a name="l00172"></a>00172 <span class="keyword">template</span>&lt;&gt;
<a name="l00173"></a><a class="code" href="classreranker_1_1_value_string_3_01string_01_4.html">00173</a> <span class="keyword">class </span><a class="code" href="classreranker_1_1_value_string.html" title="A template class that helps print out values with ostream&amp; operator support and vectors of those valu...">ValueString</a>&lt;string&gt; {
<a name="l00174"></a>00174  <span class="keyword">public</span>:
<a name="l00175"></a><a class="code" href="classreranker_1_1_value_string_3_01string_01_4.html#afc5e189ee5ceee74c9b6cb95e26fd788">00175</a>   <span class="keywordtype">string</span> <a class="code" href="classreranker_1_1_value_string_3_01string_01_4.html#afc5e189ee5ceee74c9b6cb95e26fd788">ToString</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;value)<span class="keyword"> const </span>{
<a name="l00176"></a>00176     <span class="keywordflow">return</span> <span class="stringliteral">&quot;\&quot;&quot;</span> + value + <span class="stringliteral">&quot;\&quot;&quot;</span>;
<a name="l00177"></a>00177   }
<a name="l00178"></a>00178 };
<a name="l00179"></a>00179 
<a name="l00182"></a>00182 <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;
<a name="l00183"></a><a class="code" href="classreranker_1_1_value_string_3_01shared__ptr_3_01_t_01_4_01_4.html">00183</a> <span class="keyword">class </span><a class="code" href="classreranker_1_1_value_string.html" title="A template class that helps print out values with ostream&amp; operator support and vectors of those valu...">ValueString</a>&lt;shared_ptr&lt;T&gt; &gt; {
<a name="l00184"></a>00184  <span class="keyword">public</span>:
<a name="l00185"></a><a class="code" href="classreranker_1_1_value_string_3_01shared__ptr_3_01_t_01_4_01_4.html#aa78604322fa888d430a93b1ab3b6f416">00185</a>   <span class="keywordtype">string</span> <a class="code" href="classreranker_1_1_value_string_3_01shared__ptr_3_01_t_01_4_01_4.html#aa78604322fa888d430a93b1ab3b6f416">ToString</a>(<span class="keyword">const</span> shared_ptr&lt;T&gt; &amp;value)<span class="keyword"> const </span>{
<a name="l00186"></a>00186     <span class="keywordflow">return</span> <span class="stringliteral">&quot;&lt;object&gt;&quot;</span>;
<a name="l00187"></a>00187   }
<a name="l00188"></a>00188 };
<a name="l00189"></a>00189 
<a name="l00194"></a>00194 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
<a name="l00195"></a><a class="code" href="classreranker_1_1_value_string_3_01vector_3_01_t_01_4_01_4.html">00195</a> <span class="keyword">class </span><a class="code" href="classreranker_1_1_value_string.html" title="A template class that helps print out values with ostream&amp; operator support and vectors of those valu...">ValueString</a>&lt;vector&lt;T&gt; &gt; {
<a name="l00196"></a>00196  <span class="keyword">public</span>:
<a name="l00197"></a><a class="code" href="classreranker_1_1_value_string_3_01vector_3_01_t_01_4_01_4.html#a73092a1f7580b9ebf7dc7c2b829c75b3">00197</a>   <span class="keywordtype">string</span> <a class="code" href="classreranker_1_1_value_string_3_01vector_3_01_t_01_4_01_4.html#a73092a1f7580b9ebf7dc7c2b829c75b3">ToString</a>(<span class="keyword">const</span> vector&lt;T&gt; &amp;value)<span class="keyword"> const </span>{
<a name="l00198"></a>00198     ostringstream oss;
<a name="l00199"></a>00199     oss &lt;&lt; <span class="stringliteral">&quot;{&quot;</span>;
<a name="l00200"></a>00200     <span class="keyword">typename</span> vector&lt;T&gt;::const_iterator it = value.begin();
<a name="l00201"></a>00201     <a class="code" href="classreranker_1_1_value_string.html" title="A template class that helps print out values with ostream&amp; operator support and vectors of those valu...">ValueString&lt;T&gt;</a> value_string;
<a name="l00202"></a>00202     <span class="keywordflow">if</span> (it != value.end()) {
<a name="l00203"></a>00203       oss &lt;&lt; value_string.<a class="code" href="classreranker_1_1_value_string.html#a83762558d5d4862c2353792f0e1528b6">ToString</a>(*it);
<a name="l00204"></a>00204       <span class="comment">//oss &lt;&lt; *it;</span>
<a name="l00205"></a>00205       ++it;
<a name="l00206"></a>00206     }
<a name="l00207"></a>00207     <span class="keywordflow">for</span> (; it != value.end(); ++it) {
<a name="l00208"></a>00208       oss &lt;&lt; <span class="stringliteral">&quot;, &quot;</span> &lt;&lt; value_string.<a class="code" href="classreranker_1_1_value_string.html#a83762558d5d4862c2353792f0e1528b6">ToString</a>(*it);
<a name="l00209"></a>00209       <span class="comment">//oss &lt;&lt; &quot;, &quot; &lt;&lt; *it;</span>
<a name="l00210"></a>00210     }
<a name="l00211"></a>00211     oss &lt;&lt; <span class="stringliteral">&quot;}&quot;</span>;
<a name="l00212"></a>00212     <span class="keywordflow">return</span> oss.str();
<a name="l00213"></a>00213   }
<a name="l00214"></a>00214 };
<a name="l00215"></a>00215 
<a name="l00220"></a>00220 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
<a name="l00221"></a><a class="code" href="classreranker_1_1_var_map.html">00221</a> <span class="keyword">class </span><a class="code" href="classreranker_1_1_var_map.html" title="A container to hold the mapping between named variables of a specific type and their values...">VarMap</a> : <span class="keyword">public</span> <a class="code" href="classreranker_1_1_var_map_base.html" title="A base class for a mapping from variables of a specific type to their values.">VarMapBase</a> {
<a name="l00222"></a>00222  <span class="keyword">public</span>:
<a name="l00230"></a><a class="code" href="classreranker_1_1_var_map.html#abb805680c80d7cf246b0baa9a89b9bae">00230</a>   <a class="code" href="classreranker_1_1_var_map.html#abb805680c80d7cf246b0baa9a89b9bae" title="Constructs a mapping from variables of a particular type to their values.">VarMap</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, <a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> *env, <span class="keywordtype">bool</span> is_primitive = <span class="keyword">true</span>) :
<a name="l00231"></a>00231       <a class="code" href="classreranker_1_1_var_map_base.html" title="A base class for a mapping from variables of a specific type to their values.">VarMapBase</a>(name, env, is_primitive) { }
<a name="l00232"></a>00232 
<a name="l00233"></a><a class="code" href="classreranker_1_1_var_map.html#af8844540d015ae4e5aa4c878cf85fd97">00233</a>   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_var_map.html#af8844540d015ae4e5aa4c878cf85fd97">~VarMap</a>() { }
<a name="l00234"></a>00234 
<a name="l00235"></a>00235   <span class="comment">// Accessor methods</span>
<a name="l00236"></a>00236 
<a name="l00242"></a><a class="code" href="classreranker_1_1_var_map.html#a06ae9d1793c6e507b975ac23f9d7af58">00242</a>   <span class="keywordtype">bool</span> <a class="code" href="classreranker_1_1_var_map.html#a06ae9d1793c6e507b975ac23f9d7af58" title="Assigns the value of the specified variable to the object pointed to by the value parameter...">Get</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname, T *value)<span class="keyword"> const </span>{
<a name="l00243"></a>00243     <span class="keyword">typename</span> unordered_map&lt;string, T&gt;::const_iterator it = vars_.find(varname);
<a name="l00244"></a>00244     <span class="keywordflow">if</span> (it == vars_.end()) {
<a name="l00245"></a>00245       <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00246"></a>00246     } <span class="keywordflow">else</span> {
<a name="l00247"></a>00247       *value = it-&gt;second;
<a name="l00248"></a>00248       <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00249"></a>00249     }
<a name="l00250"></a>00250   }
<a name="l00251"></a>00251 
<a name="l00253"></a><a class="code" href="classreranker_1_1_var_map.html#a9962a54a8e138ea24f49fdb92df108dd">00253</a>   <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classreranker_1_1_var_map.html#a9962a54a8e138ea24f49fdb92df108dd">Defined</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname)<span class="keyword"> const </span>{
<a name="l00254"></a>00254     <span class="keywordflow">return</span> vars_.find(varname) != vars_.end();
<a name="l00255"></a>00255   }
<a name="l00256"></a>00256 
<a name="l00258"></a><a class="code" href="classreranker_1_1_var_map.html#a4facf600cb7a75264e443f70856767e3">00258</a>   <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_var_map.html#a4facf600cb7a75264e443f70856767e3" title="Sets the specified variable to the specified value.">Set</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname, T value) {
<a name="l00259"></a>00259     vars_[varname] = value;
<a name="l00260"></a>00260   }
<a name="l00261"></a>00261 
<a name="l00263"></a><a class="code" href="classreranker_1_1_var_map.html#acc6b1af4c1e73585fe3b686ca5ac1ade">00263</a>   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_var_map.html#acc6b1af4c1e73585fe3b686ca5ac1ade">ReadAndSet</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname, <a class="code" href="classreranker_1_1_stream_tokenizer.html" title="A simple class for tokenizing a stream of tokens for the formally specified language used to construc...">StreamTokenizer</a> &amp;st) {
<a name="l00264"></a>00264     <span class="keywordflow">if</span> (<a class="code" href="environment_8_h.html#abeee3249a73d20ce434d64f7ce0767cb">VAR_MAP_DEBUG</a> &gt;= 1) {
<a name="l00265"></a>00265       cerr &lt;&lt; <span class="stringliteral">&quot;VarMap&lt;&quot;</span> &lt;&lt; <a class="code" href="classreranker_1_1_var_map_base.html#acf4c7614b477b3f986c0c1e7d9551ae0" title="Returns the type name of the variables of this instance.">Name</a>() &lt;&lt; <span class="stringliteral">&quot;&gt;::ReadAndSet: about to set varname &quot;</span>
<a name="l00266"></a>00266            &lt;&lt; varname &lt;&lt; <span class="stringliteral">&quot; of type &quot;</span> &lt;&lt; <span class="keyword">typeid</span>(T).name() &lt;&lt; endl;
<a name="l00267"></a>00267     }
<a name="l00268"></a>00268 
<a name="l00269"></a>00269     <span class="comment">// First check if next token is an identifier and is a variable in</span>
<a name="l00270"></a>00270     <span class="comment">// the environment, set varname to its value.</span>
<a name="l00271"></a>00271     <span class="keywordflow">if</span> (<a class="code" href="classreranker_1_1_var_map_base.html#aa24cb62b1c8aa7cf4049772f35712944" title="The Environment that holds this VarMap instance.">env_</a>-&gt;<a class="code" href="classreranker_1_1_environment.html#aed7a464b7498b2855eb24ee4563c8276" title="Returns whether the specified variable has been defined in this environment.">Defined</a>(st.<a class="code" href="classreranker_1_1_stream_tokenizer.html#a7f53bc3134419cb7b7f00bbd39430b42" title="Returns the next token that would be returned by the Next method.">Peek</a>())) {
<a name="l00272"></a>00272       <a class="code" href="classreranker_1_1_var_map_base.html" title="A base class for a mapping from variables of a specific type to their values.">VarMapBase</a> *var_map = <a class="code" href="classreranker_1_1_var_map_base.html#aa24cb62b1c8aa7cf4049772f35712944" title="The Environment that holds this VarMap instance.">env_</a>-&gt;<a class="code" href="classreranker_1_1_environment.html#a64763b2d3e5a5f1cc7a69ecc018d6003" title="Retrieves the VarMap instance for the specified variable.">GetVarMap</a>(st.<a class="code" href="classreranker_1_1_stream_tokenizer.html#a7f53bc3134419cb7b7f00bbd39430b42" title="Returns the next token that would be returned by the Next method.">Peek</a>());
<a name="l00273"></a>00273       <a class="code" href="classreranker_1_1_var_map.html" title="A container to hold the mapping between named variables of a specific type and their values...">VarMap&lt;T&gt;</a> *typed_var_map = <span class="keyword">dynamic_cast&lt;</span><a class="code" href="classreranker_1_1_var_map.html" title="A container to hold the mapping between named variables of a specific type and their values...">VarMap&lt;T&gt;</a> *<span class="keyword">&gt;</span>(var_map);
<a name="l00274"></a>00274       <span class="keywordflow">if</span> (typed_var_map != NULL) {
<a name="l00275"></a>00275         <span class="comment">// Finally consume variable.</span>
<a name="l00276"></a>00276         <span class="keywordtype">string</span> rhs_variable = st.<a class="code" href="classreranker_1_1_stream_tokenizer.html#a8fad418b62ae370295fe324229e5d43e" title="Returns the next token in the token stream.">Next</a>();
<a name="l00277"></a>00277         T value = T();
<a name="l00278"></a>00278         <span class="comment">// Retrieve rhs variable&#39;s value.</span>
<a name="l00279"></a>00279         <span class="keywordtype">bool</span> success = typed_var_map-&gt;<a class="code" href="classreranker_1_1_var_map.html#a06ae9d1793c6e507b975ac23f9d7af58" title="Assigns the value of the specified variable to the object pointed to by the value parameter...">Get</a>(rhs_variable, &amp;value);
<a name="l00280"></a>00280         <span class="comment">// Set varname to the same value.</span>
<a name="l00281"></a>00281         <span class="keywordflow">if</span> (<a class="code" href="environment_8_h.html#abeee3249a73d20ce434d64f7ce0767cb">VAR_MAP_DEBUG</a> &gt;= 1) {
<a name="l00282"></a>00282           cerr &lt;&lt; <span class="stringliteral">&quot;VarMap&lt;&quot;</span> &lt;&lt; <a class="code" href="classreranker_1_1_var_map_base.html#acf4c7614b477b3f986c0c1e7d9551ae0" title="Returns the type name of the variables of this instance.">Name</a>() &lt;&lt; <span class="stringliteral">&quot;&gt;::ReadAndSet: setting variable &quot;</span>
<a name="l00283"></a>00283                &lt;&lt; varname &lt;&lt; <span class="stringliteral">&quot; to same value as rhs variable &quot;</span> &lt;&lt; rhs_variable
<a name="l00284"></a>00284                &lt;&lt; endl;
<a name="l00285"></a>00285         }
<a name="l00286"></a>00286         <span class="keywordflow">if</span> (success) {
<a name="l00287"></a>00287           <a class="code" href="classreranker_1_1_var_map.html#a4facf600cb7a75264e443f70856767e3" title="Sets the specified variable to the specified value.">Set</a>(varname, value);
<a name="l00288"></a>00288         } <span class="keywordflow">else</span> {
<a name="l00289"></a>00289           <span class="comment">// Error: we couldn&#39;t find the varname in this VarMap.</span>
<a name="l00290"></a>00290         }
<a name="l00291"></a>00291       } <span class="keywordflow">else</span> {
<a name="l00292"></a>00292         <span class="comment">// Error: inferred (or, eventually, declared) type of varname is</span>
<a name="l00293"></a>00293         <span class="comment">// different from the type of the rhs variable.</span>
<a name="l00294"></a>00294       }
<a name="l00295"></a>00295     } <span class="keywordflow">else</span> {
<a name="l00296"></a>00296       T value;
<a name="l00297"></a>00297       <a class="code" href="classreranker_1_1_initializer.html" title="A class to initialize a Factory-constructible object.">Initializer&lt;T&gt;</a> initializer(&amp;value);
<a name="l00298"></a>00298       initializer.<a class="code" href="classreranker_1_1_initializer.html#a8ebde0ddb09e92fb714d7ef22b413845">Init</a>(st, <a class="code" href="classreranker_1_1_var_map_base.html#aa24cb62b1c8aa7cf4049772f35712944" title="The Environment that holds this VarMap instance.">env_</a>);
<a name="l00299"></a>00299       <a class="code" href="classreranker_1_1_var_map.html#a4facf600cb7a75264e443f70856767e3" title="Sets the specified variable to the specified value.">Set</a>(varname, value);
<a name="l00300"></a>00300 
<a name="l00301"></a>00301       <span class="keywordflow">if</span> (<a class="code" href="environment_8_h.html#abeee3249a73d20ce434d64f7ce0767cb">VAR_MAP_DEBUG</a> &gt;= 1) {
<a name="l00302"></a>00302         <a class="code" href="classreranker_1_1_value_string.html" title="A template class that helps print out values with ostream&amp; operator support and vectors of those valu...">ValueString&lt;T&gt;</a> value_string;
<a name="l00303"></a>00303         cerr &lt;&lt; <span class="stringliteral">&quot;VarMap&lt;&quot;</span> &lt;&lt; <a class="code" href="classreranker_1_1_var_map_base.html#acf4c7614b477b3f986c0c1e7d9551ae0" title="Returns the type name of the variables of this instance.">Name</a>() &lt;&lt; <span class="stringliteral">&quot;&gt;::ReadAndSet: set varname &quot;</span>
<a name="l00304"></a>00304              &lt;&lt; varname &lt;&lt; <span class="stringliteral">&quot; to value &quot;</span> &lt;&lt; value_string.<a class="code" href="classreranker_1_1_value_string.html#a83762558d5d4862c2353792f0e1528b6">ToString</a>(value)&lt;&lt; endl;
<a name="l00305"></a>00305       }
<a name="l00306"></a>00306     }
<a name="l00307"></a>00307   }
<a name="l00308"></a>00308 
<a name="l00310"></a><a class="code" href="classreranker_1_1_var_map.html#a13dfbc0f28af2b2cb6d8a808519681a4">00310</a>   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_var_map.html#a13dfbc0f28af2b2cb6d8a808519681a4">Print</a>(ostream &amp;os)<span class="keyword"> const </span>{
<a name="l00311"></a>00311     <a class="code" href="classreranker_1_1_value_string.html" title="A template class that helps print out values with ostream&amp; operator support and vectors of those valu...">ValueString&lt;T&gt;</a> value_string;
<a name="l00312"></a>00312     <span class="keywordflow">for</span> (<span class="keyword">typename</span> unordered_map&lt;string, T&gt;::const_iterator it = vars_.begin();
<a name="l00313"></a>00313          it != vars_.end(); ++it) {
<a name="l00314"></a>00314       <span class="keyword">const</span> T&amp; value = it-&gt;second;
<a name="l00315"></a>00315       os &lt;&lt; <a class="code" href="classreranker_1_1_var_map_base.html#acf4c7614b477b3f986c0c1e7d9551ae0" title="Returns the type name of the variables of this instance.">Name</a>() &lt;&lt; <span class="stringliteral">&quot; &quot;</span>
<a name="l00316"></a>00316          &lt;&lt; it-&gt;first
<a name="l00317"></a>00317          &lt;&lt; <span class="stringliteral">&quot; = &quot;</span>
<a name="l00318"></a>00318          &lt;&lt; value_string.<a class="code" href="classreranker_1_1_value_string.html#a83762558d5d4862c2353792f0e1528b6">ToString</a>(value)
<a name="l00319"></a>00319          &lt;&lt; <span class="stringliteral">&quot;;\n&quot;</span>;
<a name="l00320"></a>00320     }
<a name="l00321"></a>00321     os.flush();
<a name="l00322"></a>00322   }
<a name="l00323"></a>00323 
<a name="l00325"></a><a class="code" href="classreranker_1_1_var_map.html#a1e717f1d6bf0be3c038a8e5de4f3c238">00325</a>   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_var_map_base.html" title="A base class for a mapping from variables of a specific type to their values.">VarMapBase</a> *<a class="code" href="classreranker_1_1_var_map.html#a1e717f1d6bf0be3c038a8e5de4f3c238">Copy</a>(<a class="code" href="classreranker_1_1_environment.html" title="An interface for an environment in which variables of various types are mapped to their values...">Environment</a> *env)<span class="keyword"> const </span>{
<a name="l00326"></a>00326     <a class="code" href="classreranker_1_1_var_map.html" title="A container to hold the mapping between named variables of a specific type and their values...">VarMap&lt;T&gt;</a> *var_map_copy = <span class="keyword">new</span> <a class="code" href="classreranker_1_1_var_map.html" title="A container to hold the mapping between named variables of a specific type and their values...">VarMap&lt;T&gt;</a>(*this);
<a name="l00327"></a>00327     var_map_copy-&gt;<a class="code" href="classreranker_1_1_var_map_base.html#a4378638e3959e3b98135a90cbee819ea" title="To allow proper implementation of Copy in VarMapBase implementation, since we don&#39;t get copying of ba...">SetMembers</a>(<a class="code" href="classreranker_1_1_var_map_base.html#aa262c6f13b3e83d428d3afcb1a5864ca" title="The type name of this VarMap.">name_</a>, env, <a class="code" href="classreranker_1_1_var_map_base.html#a6b1e6b981ae86d5acfb9889dbc69c89d" title="Whether this VarMap instance holds variables of primitive type or vector of primitives.">is_primitive_</a>);
<a name="l00328"></a>00328     <span class="keywordflow">return</span> var_map_copy;
<a name="l00329"></a>00329   }
<a name="l00330"></a>00330  <span class="keyword">private</span>:
<a name="l00331"></a>00331   unordered_map&lt;string, T&gt; vars_;
<a name="l00332"></a>00332 };
<a name="l00333"></a>00333 
<a name="l00334"></a>00334 }  <span class="comment">// namespace reranker</span>
<a name="l00335"></a>00335 
<a name="l00336"></a>00336 <span class="preprocessor">#endif</span>
</pre></div></div><!-- contents -->
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